668110361 has 2 divisors, whose sum is σ = 668110362. Its totient is φ = 668110360.

The previous prime is 668110343. The next prime is 668110363. The reversal of 668110361 is 163011866.

668110361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667912336 + 198025 = 25844^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 668110361 - 2¹⁴ = 668093977 is a prime.

Together with 668110363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (668110363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334055180 + 334055181.

It is an arithmetic number, because the mean of its divisors is an integer number (334055181).

Almost surely, 2^668110361 is an apocalyptic number.

It is an amenable number.

668110361 is a deficient number, since it is larger than the sum of its proper divisors (1).

668110361 is an equidigital number, since it uses as much as digits as its factorization.

668110361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 668110361 is about 25847.8308761103. The cubic root of 668110361 is about 874.2106016757.

The spelling of 668110361 in words is "six hundred sixty-eight million, one hundred ten thousand, three hundred sixty-one".